Forget it RL, its like negotiating with the N Koreans.
Like you said, its not just the math, its the morality.
What it comes down to is rich people don't want to pay taxes to send poor people to the doctor. Neither do people who think they are entitled to be rich because they believe only they have a work ethic and no one else does. And neither do people who have convinced themselves they would be rich if it just weren't for those damned poor people and those damned liberals.
Fortunately, a lot of people who aren't rich, never were rich, and don't particularly care if they ever become rich are still willing to share their own wealth to help their fellow Americans and their kids be healthy. And sooner or later those people will prevail because they ARE the majority.